C++ class with pointer to struct

[Alpha Omega]

Hey I am writing some code with Irrlicht and want to make a class with a pointer to struct class member. Such as

Code: Select all

struct thing1
{
     int a;
};

class Thing
{
      public:
      thing1* b;
};

I thought that to access the struct part of the class it would be

Code: Select all

Thing* apple;

apple->b->a;

But I get a compiler error saying that this "a" is not a member of b. Is this a special rule in c++?[/code]

[Lonesome Ducky]

...Are you sure? I copied that exact code and it works perfectly fine in MSVC++ 2008

[d3jake]

I think the error may lie in the fact that a, within the struct is simply an object of type int, it is not a pointer. My guess would be that the correct line of code to access it would be:

Code: Select all

apple->b.a

I seem to remember getting caught up with something like this in the past. The compiler error is one of those that give you half an idea as to what the actual problem is.

[Lonesome Ducky]

I think the error may lie in the fact that a, within the struct is simply an object of type int, it is not a pointer. My guess would be that the correct line of code to access it would be:

Code: Select all

apple->b.a

I seem to remember getting caught up with something like this in the past. The compiler error is one of those that give you half an idea as to what the actual problem is.

Nope. Though a is not a pointer b IS. And to access the members of a pointer you have to use ->. If you were somehow accessing the members of a instead, then you would use .

[Alpha Omega]

Yea its weird it wasnt working and then I just booted it up this morning and it worked fine .